function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return _typeof(key) === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (_typeof(input) !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (_typeof(res) !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
var findInArray = function findInArray(array, callback) {
  for (var i = 0, length = array.length; i < length; i++) {
    if (callback.apply(callback, [array[i], i, array])) return array[i];
  }
};
var isNum = function isNum(num) {
  return typeof num === 'number' && !isNaN(num);
};
var addClassName = function addClassName(el, className) {
  if (el.classList) {
    el.classList.add(className);
  } else {
    if (!el.className.match(new RegExp("(?:^|\\s)".concat(className, "(?!\\S)")))) {
      el.className += " ".concat(className);
    }
  }
};
var removeClassName = function removeClassName(el, className) {
  if (el.classList) {
    el.classList.remove(className);
  } else {
    el.className = el.className.replace(new RegExp("(?:^|\\s)".concat(className, "(?!\\S)"), 'g'), '');
  }
};
var findDOMNode = function findDOMNode(node) {
  if (!node) {
    throw new Error('Unmounted during event!');
  }
  return node;
};
export var createCoreData = function createCoreData(_ref) {
  var node = _ref.node,
    lastPositions = _ref.lastPositions,
    x = _ref.x,
    y = _ref.y;
  var isStart = !isNum(lastPositions.x);
  if (isStart) {
    // If this is our first move, use the x and y as last coords.
    return {
      node: node,
      deltaX: 0,
      deltaY: 0,
      lastX: x,
      lastY: y,
      x: x,
      y: y
    };
  } else {
    // Otherwise calculate proper values.
    return {
      node: node,
      deltaX: x - lastPositions.x,
      deltaY: y - lastPositions.y,
      lastX: lastPositions.x,
      lastY: lastPositions.y,
      x: x,
      y: y
    };
  }
};
export var getControlPosition = function getControlPosition(e, touchIdentifier, draggableCore) {
  var touchObj = typeof touchIdentifier === 'number' ? getTouch(e, touchIdentifier) : null;
  if (typeof touchIdentifier === 'number' && !touchObj) return null; // not the right touch
  var node = findDOMNode(draggableCore);
  // User can provide an offsetParent if desired.
  var offsetParent = draggableCore.offsetParent || node.offsetParent || node.ownerDocument.body;
  return offsetXYFromParent(touchObj || e, offsetParent, 1);
};
export var addEvent = function addEvent(el, event, handler, inputOptions) {
  if (!el) return;
  var options = _objectSpread({
    capture: true
  }, inputOptions);
  if (el.addEventListener) {
    el.addEventListener(event, handler, options);
  } else if (el.attachEvent) {
    el.attachEvent('on' + event, handler);
  } else {
    el['on' + event] = handler;
  }
};
export var removeEvent = function removeEvent(el, event, handler, inputOptions) {
  if (!el) return;
  var options = _objectSpread({
    capture: true
  }, inputOptions);
  if (el.removeEventListener) {
    el.removeEventListener(event, handler, options);
  } else if (el.detachEvent) {
    el.detachEvent('on' + event, handler);
  } else {
    el['on' + event] = null;
  }
};
export var getTouchIdentifier = function getTouchIdentifier(e) {
  if (e.targetTouches && e.targetTouches[0]) return e.targetTouches[0].identifier;
  if (e.changedTouches && e.changedTouches[0]) return e.changedTouches[0].identifier;
};
export var getTouch = function getTouch(e, identifier) {
  return e.targetTouches && findInArray(e.targetTouches, function (t) {
    return identifier === t.identifier;
  }) || e.changedTouches && findInArray(e.changedTouches, function (t) {
    return identifier === t.identifier;
  });
};
export var addUserSelectStyles = function addUserSelectStyles(doc) {
  if (!doc) return;
  var styleEl = doc.getElementById('style-el');
  if (!styleEl) {
    styleEl = doc.createElement('style');
    styleEl.type = 'text/css';
    styleEl.id = 'style-el';
    styleEl.innerHTML = '.filerobot-transparent-selection *::-moz-selection {all: inherit;}\n';
    styleEl.innerHTML += '.filerobot-transparent-selection *::selection {all: inherit;}\n';
    doc.getElementsByTagName('head')[0].appendChild(styleEl);
  }
  if (doc.body) addClassName(doc.body, 'filerobot-transparent-selection');
};
export var removeUserSelectStyles = function removeUserSelectStyles(doc) {
  if (!doc) return;
  try {
    if (doc.body) removeClassName(doc.body, 'filerobot-transparent-selection');
    if (doc.selection) {
      doc.selection.empty();
    } else {
      var selection = (doc.defaultView || window).getSelection();
      if (selection && selection.type !== 'Caret') {
        selection.removeAllRanges();
      }
    }
  } catch (e) {
    // probably IE
  }
};
export var offsetXYFromParent = function offsetXYFromParent(evt, offsetParent, scale) {
  var isBody = offsetParent === offsetParent.ownerDocument.body;
  var offsetParentRect = isBody ? {
    left: 0,
    top: 0
  } : offsetParent.getBoundingClientRect();
  var x = (evt.clientX + offsetParent.scrollLeft - offsetParentRect.left) / scale;
  var y = (evt.clientY + offsetParent.scrollTop - offsetParentRect.top) / scale;
  return {
    x: x,
    y: y
  };
};